ABB HTSS372200CN Backup Current-Limiting Fuse, 38 kV, 200 A

The ABB HTSS372200CN is a back-up current-limiting fuse for distribution transformers, rated 38.0 kV and 200 A. It is applied in series with a properly sized under-oil expulsion fuse (bay-o-net, load-sensing link or weak link): the expulsion fuse clears low-magnitude faults while the current-limiting fuse interrupts high fault currents and limits the let-through energy below the withstand capability of the transformer tank.

• Voltage rating: 38.0 kV
• Current rating: 200 A
• Rated maximum voltage: 38.0 kV
• Rated maximum interrupting current: 50.0 kA
• Minimum interrupting current: 1180 A
• Minimum melting I²t: 51000 A²s
• Maximum total I²t: 180000 A²s
• Overall diameter: 83.5-85 mm
• Overall length: 560-561.3 mm
• Body length: 533.4-534 mm
• Weight: 6.1-6.3 kg

The CN suffix marks units manufactured in China. The same rating is also available without the suffix, manufactured outside China.